CN113200253B - Bamboo-wood composite bottom plate for container - Google Patents

Bamboo-wood composite bottom plate for container Download PDF

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Publication number
CN113200253B
CN113200253B CN202110461727.XA CN202110461727A CN113200253B CN 113200253 B CN113200253 B CN 113200253B CN 202110461727 A CN202110461727 A CN 202110461727A CN 113200253 B CN113200253 B CN 113200253B
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layer
bamboo
reinforcing
bottom plate
reinforcing rib
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CN113200253A (en
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龙开学
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Shaoyang Bailong Bamboo And Wood Co ltd
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Shaoyang Bailong Bamboo And Wood Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/022—Laminated structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a bamboo-wood composite bottom plate for a container, which comprises an upper surface layer, an auxiliary reinforcing layer and a basal layer, wherein the upper surface layer is a bamboo curtain layer, the basal layer is a hot-pressing bamboo sheet layer, the auxiliary reinforcing layer is formed between the upper surface layer and the basal layer, the bamboo-wood composite bottom plate comprises a medium-density fiber slurry filling layer formed on the upper surface layer side and a high-density fiber slurry filling layer formed on the basal layer side, a reinforcing rib component penetrating through the auxiliary reinforcing layer and attached to the inner surfaces of the upper surface layer and the basal layer is also formed in the auxiliary reinforcing layer, the reinforcing rib component comprises a plurality of reinforcing rib units which are sequentially connected, and each reinforcing rib unit comprises a first reinforcing rib and a second reinforcing rib which are symmetrically arranged. The container bottom plate has better pressure resistance and impact resistance, stable integral structure and better anti-cracking performance inside, and can effectively improve the use effect and prolong the service life of the container bottom plate.

Description

Bamboo-wood composite bottom plate for container
Technical Field
The invention relates to a container base plate technology in the field of container containers, in particular to a bamboo-wood composite bottom plate for a container.
Background
The container bottom plate is one of three main components of the container, and is mainly used for bearing goods by being cushioned on the bottom surface of the container, and the container bottom plate has higher requirements on strength. The traditional container bottom plate is mainly produced and molded by processing hard wood in tropical zones as a raw material, and has the advantages of simple process and convenience in use, but the wood bottom plate is poor in wear resistance and short in service life, and hardwood is long in time, large in consumption and large in consumption of environmental resources.
Under the conditions that wood resources are increasingly scarce and cloned logs are endangered, more and more materials are applied to the production process of container floors, such as bamboo materials, various fiber materials, resin materials, metal materials and the like are applied to the field of container floors, bamboo materials serving as fast-growing materials become a new generation of substitute materials, and more producers and researchers aim at the materials with short growth cycle and low price.
The bamboo-wood composite container bottom plate uses bamboo to replace wood, so that the demand of wood is effectively reduced, and the use of the fast-growing wood not only saves the cost, but also protects the environment. In the prior art, the container bottom plate prepared by using bamboo materials is mostly formed by adopting a bamboo curtain hot-pressing splicing mode, the material utilization rate is low, the internal density of the formed container bottom plate is different, so that the physical property of the formed container bottom plate is unstable, when a surface layer bears the stress of pressure and impact force, the container bottom plate is easy to deform and lose efficacy, and the container bottom plate is prepared by compounding the bamboo materials serving as raw materials with other materials to obtain a composite material plate.
Disclosure of Invention
The invention aims to solve the technical problem of providing the bamboo-wood composite bottom plate for the container, the bamboo-wood composite bottom plate can ensure the service life of the container bottom plate under the condition of ensuring the physical strength requirement of the container bottom plate by compounding the bamboo-wood composite bottom plate with other materials and carrying out reasonable structural design, provides wider raw material sources for the container bottom plate industry, and can be used for solving the defects in the technical background.
The technical problem solved by the invention is realized by adopting the following technical scheme:
a bamboo-wood composite bottom plate for a container comprises an upper surface layer, an auxiliary reinforcing layer and a basal layer;
the upper surface layer is a bamboo curtain layer laid transversely, the base layer is a hot-pressed bamboo sheet layer formed by vertically laminating and then tiling, an interlayer space is formed between the upper surface layer and the base layer, a reinforcing mesh surface layer is formed on the lower surface of the upper surface layer and the upper surface of the base layer, the auxiliary reinforcing layer is filled and formed in the interlayer space, and the reinforcing mesh surface layer is used as an interface layer to be formed integrally with the upper surface layer and the base layer;
the auxiliary reinforcing layer comprises a medium-density fiber slurry filling layer and a high-density fiber slurry filling layer, and a reinforcing rib component is formed in the auxiliary reinforcing layer;
the forming density of the medium-density fiber pulp filling layer is 500-600 kg/m3Formed on one side of the upper layer; the forming density of the high-density fiber pulp filling layer is 680-750 kg/m3Formed on one side of the substrate layer;
the reinforcing rib component vertically penetrates through the auxiliary reinforcing layer and is attached to the upper surface layer and the inner surface of the base layer; the reinforcing rib assembly is arranged at intervals along the length direction of the bamboo-wood composite bottom plate for the container and comprises a plurality of reinforcing rib units which are sequentially connected, each reinforcing rib unit comprises a first reinforcing rib and a second reinforcing rib which are symmetrically arranged, the first reinforcing rib and the second reinforcing rib are both steel sheet structures formed by spring steel and are vertically arranged in an auxiliary reinforcing layer, the middle section of the first reinforcing rib is an outward convex arc section, the outward convex arc section is a minor arc, and smooth arc sections are respectively arranged at the two outer ends of the outward convex arc section and are sequentially connected with the connecting part of the other first reinforcing rib as the connecting part; the second reinforcing rib comprises a first straight line section and a second straight line section which are symmetrically arranged, the outer sides of the first straight line section and the second straight line section are fixedly connected to the outer side of the outer convex arc section, the first straight line section is connected with the inner side of the second straight line section, and the connecting part of the first straight line section and the second straight line section is in circular arc transition and fixedly propped against the inner side surface of the arc top of the outer convex arc section.
As a further limitation, the fiber direction of the upper layer is arranged along the length direction of the bamboo-wood composite bottom plate for the container.
As a further limitation, the base layer is formed by gluing a plurality of equal-thickness bamboo chips, then laminating and hot-press forming are carried out in the thickness direction, and when the bamboo chip boards of the base layer are tiled and formed, the gluing direction of the bamboo chip boards is perpendicular to the fiber direction of the upper layer.
By way of further limitation, the reinforcing mesh layer is a nylon mesh.
By way of further limitation, the reinforcing fibers filled in the medium-density fiber slurry filling layer in the auxiliary reinforcing layer are one or a combination of nylon fibers, polyphenylene sulfide fibers, aromatic polyamide copolymer fibers and heterocyclic polyamide fibers; the filling mass ratio of the reinforcing fibers in the medium-density fiber slurry filling layer is 18-21%.
By way of further limitation, the reinforcing fibers filled in the high-density fiber slurry filling layer in the auxiliary reinforcing layer are a mixture of nylon fibers, heterocyclic polyamide fibers and high-strength fibers in proportion, the high-strength fibers are high-strength high-modulus polyethylene fibers and/or basalt fibers, and the mass ratio of the high-strength fibers in the reinforcing fibers is not less than 30%; the filling mass ratio of the reinforcing fibers in the medium-density fiber slurry filling layer is 20-23%.
The medium-density fiber pulp filling layer and the high-density fiber pulp filling layer are further limited to be formed by using urea-formaldehyde resin or aldehyde ketone resin as forming resin pulp in a pressurizing and filling mode, and the medium-density fiber pulp filling layer and the high-density fiber pulp filling layer are formed twice during forming.
As a further limitation, two first reinforcing ribs which are opposite in position are attached and riveted into a whole at the connecting part, and the inner side surface of the second reinforcing rib corresponding to the arc top of the first reinforcing rib is anchored with the outer convex arc section into a whole.
The invention has the advantages and beneficial effects that:
the bamboo-wood composite container bottom plate replaces traditional hard wood with fast growing wood, and is filled with two layers of fiber resin slurry with different densities, so that the bearing performance and the impact resistance of the bamboo-wood composite container bottom plate can be effectively improved after the resin slurry is hardened, and the physical stability of the formed container bottom plate is improved.
Secondly, the reinforcing rib units formed in the fiber resin slurry can be matched with the medium-density fiber slurry filling layer and the high-density fiber slurry filling layer to effectively improve the structural stability of the auxiliary reinforcing layer and prevent the interlayer peeling between the upper layer and the medium-density fiber slurry filling layer, between the medium-density fiber slurry filling layer and the high-density fiber slurry filling layer and between the high-density fiber slurry filling layer and the substrate layer.
The reinforcing rib units are arranged on the medium-density fiber pulp filling layer and the high-density fiber pulp filling layer, so that the defect that the medium-density fiber pulp filling layer and the high-density fiber pulp filling layer are easy to crack can be effectively overcome, outward expansion growth of cracks can be prevented and delayed when the cracks occur in the container bottom plate, and the service life of the container bottom plate is prolonged.
Drawings
FIG. 1 is a top view of a layer structure taken away from a substrate according to a preferred embodiment of the present invention.
FIG. 2 is a cross-sectional detail view of the preferred embodiment of the present invention.
FIG. 3 is a schematic view of a reinforcing rib unit according to a preferred embodiment of the present invention.
Wherein: 1. a top layer; 2. a first reinforcing mesh facing; 3. a medium density fiber slurry fill layer; 4. a high density fiber slurry fill layer; 5. a second reinforcing mesh facing; 6. a base layer; 7. a first reinforcing rib; 8. a second reinforcing rib; 71. a convex arc section; 72. a connecting portion; 81. a first straight line segment; 82. a second straight line segment.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Referring to fig. 1-3, a preferred embodiment of a bamboo-wood composite bottom plate for a container is shown, which is used to be installed on the bottom surface of the container as a bearing and supporting structure, and has a size matched with the size of the container, the lower surface of the base layer 6 is used as the bottom surface contact surface of the container, and the upper surface of the upper layer 1 is used as the bearing contact surface of the goods in the container.
In this embodiment, the bamboo-wood composite bottom plate for the container is integrally formed, the base layer 6 comprises a plurality of bamboo chip single pieces with the same size, the bamboo chip single pieces are glued after the operations of removing yellow and green, boiling with alkali, softening, slicing and the like, vertically overlapped and hot-pressed for forming after gluing, the formed double faces are flattened and then subjected to surface polishing, and then tiled to obtain the base layer 6 shown in the figure, the base layer 6 is horizontally placed on the bottom surface of the container according to the mode of figure 2, so that the gluing direction of each bamboo chip single piece in the base layer 6 is parallel to the width direction of the container; the upper surface layer 1 is a bamboo curtain layer, and the direction of bamboo fiber in the bamboo curtain layer is parallel to the length direction of the container. In addition, a nylon net surface is formed on the lower surface of the upper surface layer 1 to serve as a first reinforcing net surface layer 2, a nylon net surface is formed on the upper surface of the substrate layer 6 to serve as a second reinforcing net surface layer 5, and the first reinforcing net surface layer 2 and the second reinforcing net surface layer 5 are adhered to the corresponding upper surface layer 1 and the corresponding substrate layer 6 after being glued.
An auxiliary reinforcing layer is formed between the upper surface layer 1 and the substrate layer 6, the thickness of the auxiliary reinforcing layer is 0.8-1.5 times of the thickness of the substrate layer 6, the auxiliary reinforcing layer comprises a medium-density fiber pulp filling layer 3 and a high-density fiber pulp filling layer 4, wherein the forming density of the medium-density fiber pulp filling layer 3 is 500-600 kg/m3Formed on one side of the lower surface of the upper layer 1; the forming density of the high-density fiber pulp filling layer 4 is 680-750 kg/m3Formed on the upper surface side of the base layer 6; the medium-density fiber slurry filling layer 3 and the high-density fiber slurry filling layer 4 both use urea-formaldehyde resin or modified urea-formaldehyde resin as resin slurry, uniformly disperse the reinforcing fibers, and then harden and form. The reinforcing fibers filled in the medium-density fiber slurry filling layer 3 are one or a combination of nylon fibers, polyphenylene sulfide fibers, aromatic polyamide copolymer fibers and heterocyclic polyamide fibers, and the filling mass ratio of the reinforcing fibers in the medium-density fiber slurry filling layer 3 is 18-21%; the reinforced fiber filled in the high-density fiber slurry filling layer 4 is nylon fiberThe high-strength fiber in the mixed fiber is high-strength high-modulus polyethylene fiber and/or basalt fiber, the mass ratio of the high-strength fiber in the reinforced fiber is not less than 30%, and in addition, the filling mass ratio of the reinforced fiber in the high-density fiber slurry filling layer 4 is 20-23%.
In the present embodiment, the reinforcing fibers filled in the medium-density fiber slurry filling layer 3 are blend fibers having a mass ratio of nylon fibers, aramid copolymer fibers, and heterocyclic polyamide fibers of 1:1:1, the blend fibers having a filling mass ratio of 20% in the medium-density fiber slurry filling layer 3, and are uniformly dispersed in the medium-density fiber slurry filling layer 3. And the high-density fiber slurry filling layer 4 is filled with 21% by mass, and the reinforcing fibers in the high-density fiber slurry filling layer 4 comprise 7wt% of nylon fibers, 40wt% of heterocyclic polyamide fibers, 43wt% of high-strength high-modulus polyethylene fibers and 10wt% of basalt fibers.
In the present embodiment, the ratio of the thickness of the middle density fiber pulp filling layer 3 to the thickness of the high density fiber pulp filling layer 4 is 2:3, and the structure of the thickness ratio is configured to effectively bear the weight and provide shock buffering protection under the bearing condition, and compared with a pure hardwood container bottom plate with the same thickness, the ultimate bearing performance is basically consistent (about 0.8-1.35 times of that of an "abaculus" wood bottom plate made by processing tropical hardwood), but due to the density difference configuration of the middle density fiber pulp filling layer 3 and the high density fiber pulp filling layer 4, the impact force of the bearing area on the surface of the bottom plate can be quickly absorbed and released by an auxiliary reinforcing layer composed of the middle density fiber pulp filling layer 3 and the high density fiber pulp filling layer 4, and the surface impact damage of the container goods to the upper layer 1 is reduced.
Although the medium-density fiber pulp filling layer 3 and the high-density fiber pulp filling layer 4 can make the bamboo-wood composite bottom plate for the container have better shock resistance and pressure resistance, but due to the fiber filling properties of the medium density fiber slurry filling layer 3 and the high density fiber slurry filling layer 4 themselves, cracks are easy to generate at the interface position of the fiber under the condition of pressure and vibration, in order to reduce the generation of the cracks and prevent the diffusion of the internal cracks, a reinforcing rib component is also formed in the auxiliary reinforcing layer, the reinforcing rib components are arranged at intervals in the length direction of the bamboo-wood composite bottom plate for the container as shown in figure 1, penetrate through an auxiliary reinforcing layer consisting of a medium-density fiber slurry filling layer 3 and a high-density fiber slurry filling layer 4 from top to bottom, and is adhered to the upper layer 1, the first reinforcing mesh layer 2 and the second reinforcing mesh layer 5 on the inner surface of the substrate layer 6.
In this embodiment, each reinforcing rib assembly is formed by connecting a plurality of reinforcing rib units in series, and each reinforcing rib unit has a structure as shown in fig. 3, and includes a first reinforcing rib 7 and a second reinforcing rib 8 which are symmetrically arranged, wherein the first reinforcing rib 7 includes an outward convex arc section 71 as a middle section, the outward convex arc section 71 is a minor arc corresponding to an angle of 90 degrees, both sides of the outward convex arc section 71 are provided with connecting parts 72, the connecting parts 72 are in smooth arc transition with the outer edge of the outward convex arc section 71, two first reinforcing ribs 7 which are oppositely arranged are attached and riveted at the positions of the connecting parts 72, and two reinforcing rib units which are adjacent in position are connected into a whole at the connecting parts 72; the second reinforcing rib 8 comprises a first straight line section 81 and a second straight line section 82 which are symmetrically arranged, the first straight line section 81 and the second straight line section 82 are consistent in length, the outer side of the first straight line section 81 is fixedly connected with the outer side of the outer convex arc-shaped section 71, the inner side of the first straight line section 82 forms an included angle, and the included angle is in arc transition and abuts against the inner side surface of the arc top of the outer convex arc-shaped section 71 and is anchored with the outer convex arc-shaped section 71 into a whole at the position.
In this embodiment, the medium-density fiber slurry filling layer 3 and the high-density fiber slurry filling layer 4 are formed by first laying the formed substrate layer 6 during forming, and adhering the formed second reinforcing mesh surface layer 5 on the surface thereof and fixing the reinforcing rib component, and then sequentially forming the high-density fiber slurry filling layer 4 and the medium-density fiber slurry filling layer 3 by a pressurized filling method, wherein the medium-density fiber slurry filling layer 3 is formed when the high-density fiber slurry filling layer 4 is dried to 70-85%, and is pressed and fixed by the upper surface layer 1 with the first reinforcing mesh surface layer 2 when the medium-density fiber slurry filling layer 3 is dried to 70-85%, until the plate body is formed.
And through the arrangement of the reinforcing rib component, on one hand, the auxiliary reinforcing layer can be assisted to bear the load, and the structural stability of the auxiliary reinforcing layer is kept, on the aspect of mechanical analysis, when the upper surface layer of the bamboo-wood composite bottom plate for the container is pressed, the upper surface layer 1 and the medium-density fiber slurry filling layer 3 in the upper part are mainly under the action of pressure stress, the lower part of the middle-density fiber pulp filling layer 3, the high-density fiber pulp filling layer 4 and the basal layer 6 mainly bear the action of tensile stress, the basal layer 6 mainly utilizes the toughness of bamboo fibers to bear the action of tensile stress and keep the structure stable through a bamboo chip pressing structure transversely arranged in the width direction, the lower part of the middle-density fiber pulp filling layer 3 and the high-density fiber pulp filling layer 4 bear the action of tensile stress and keep the structural stability of the auxiliary reinforcing layer through the structural characteristics of the middle-density fiber pulp filling layer and the high-density fiber pulp filling layer and the rigidity and elasticity of the spring steel; meanwhile, when the bamboo-wood composite bottom plate for the container is used for a period of time and cracks should be generated in the auxiliary reinforcing layer, the reinforcing rib component can effectively relieve the cracks and can effectively prevent the outward expansion cracks from growing so as to ensure the service life of the bamboo-wood composite bottom plate for the container.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A bamboo-wood composite bottom plate for a container is characterized by comprising an upper surface layer, an auxiliary reinforcing layer and a basal layer;
the upper surface layer is a bamboo curtain layer laid transversely, the base layer is a hot-pressed bamboo sheet layer formed by vertically laminating and then tiling, an interlayer space is formed between the upper surface layer and the base layer, a reinforcing mesh surface layer is formed on the lower surface of the upper surface layer and the upper surface of the base layer, the auxiliary reinforcing layer is filled and formed in the interlayer space, and the reinforcing mesh surface layer is used as an interface layer to be formed integrally with the upper surface layer and the base layer;
the auxiliary reinforcing layer comprises a medium-density fiber slurry filling layer and a high-density fiber slurry filling layer, and a reinforcing rib component is formed in the auxiliary reinforcing layer;
the forming density of the medium-density fiber slurry filling layer is 500-600 kg/m3Formed on one side of the upper layer; the forming density of the high-density fiber pulp filling layer is 680-750 kg/m3Formed on one side of the substrate layer;
the reinforcing rib component vertically penetrates through the auxiliary reinforcing layer and is attached to the upper surface layer and the inner surface of the substrate layer; the reinforcing rib assembly is arranged at intervals along the length direction of the bamboo-wood composite bottom plate for the container and comprises a plurality of reinforcing rib units which are sequentially connected, each reinforcing rib unit comprises a first reinforcing rib and a second reinforcing rib which are symmetrically arranged, the first reinforcing rib and the second reinforcing rib are both steel sheet structures formed by spring steel and are vertically arranged in an auxiliary reinforcing layer, the middle section of the first reinforcing rib is an outward convex arc section, the outward convex arc section is a minor arc, and smooth arc sections are respectively arranged at the two outer ends of the outward convex arc section and are sequentially connected with the connecting part of the other first reinforcing rib as the connecting part; the second reinforcing rib comprises a first straight line section and a second straight line section which are symmetrically arranged, the outer sides of the first straight line section and the second straight line section are fixedly connected to the outer side of the outer convex arc section, the first straight line section is connected with the inner side of the second straight line section, and the connecting part of the first straight line section and the second straight line section is in circular arc transition and fixedly propped against the inner side surface of the arc top of the outer convex arc section.
2. The bamboo-wood composite bottom plate for the container as claimed in claim 1, wherein the fiber orientation of the upper layer is arranged along the length direction of the bamboo-wood composite bottom plate for the container.
3. The bamboo-wood composite bottom plate for the container according to claim 1, wherein the base layer is formed by gluing a plurality of equal-thickness bamboo chips, then laminating and hot press forming are performed in the thickness direction, and when the bamboo chip plates of the base layer are tiled and formed, the gluing direction of the bamboo chip plates is perpendicular to the fiber direction of the upper layer.
4. The bamboo-wood composite bottom plate for the container according to claim 1, wherein the reinforcing mesh layer is a nylon mesh.
5. The bamboo-wood composite bottom plate for the container as claimed in claim 1, wherein the reinforcing fiber filled in the medium-density fiber pulp filling layer in the auxiliary reinforcing layer is one or a combination of nylon fiber, polyphenylene sulfide fiber, aromatic polyamide copolymer fiber and heterocyclic polyamide fiber.
6. The bamboo-wood composite bottom plate for the container as claimed in claim 5, wherein the filling mass ratio of the reinforcing fibers in the medium-density fiber pulp filling layer is 18-21%.
7. The bamboo-wood composite bottom plate for the container as claimed in claim 1, wherein the reinforcing fibers filled in the high-density fiber slurry filling layer in the auxiliary reinforcing layer are a mixture of nylon fibers, heterocyclic polyamide fibers and high-strength fibers in proportion, the high-strength fibers are a mixture of high-strength high-modulus polyethylene fibers and basalt fibers in any proportion, and the mass ratio of the high-strength fibers in the reinforcing fibers is not less than 30%.
8. The bamboo-wood composite bottom plate for the container as claimed in claim 7, wherein the filling mass ratio of the reinforcing fibers in the medium-density fiber pulp filling layer is 20-23%.
9. The bamboo-wood composite floor for the container according to claim 1, wherein the medium-density fiber pulp filling layer and the high-density fiber pulp filling layer are formed by using urea-formaldehyde resin or aldehyde-ketone resin as forming resin pulp in a pressurized filling manner, and the medium-density fiber pulp filling layer and the high-density fiber pulp filling layer are formed twice during forming.
10. The bamboo-wood composite bottom plate for the container according to claim 1, wherein two first reinforcing ribs opposite in position are attached and riveted together at the connecting portion, and the second reinforcing rib is anchored together with the outer convex arc section at the inner side surface corresponding to the arc top of the first reinforcing rib.
CN202110461727.XA 2021-04-27 2021-04-27 Bamboo-wood composite bottom plate for container Active CN113200253B (en)

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CN104802233A (en) * 2014-01-27 2015-07-29 上海杰事杰新材料(集团)股份有限公司 Container baseboard and preparation method thereof
CN104802231A (en) * 2014-01-27 2015-07-29 上海杰事杰新材料(集团)股份有限公司 Reinforced container soleplate and preparation method thereof
CN208515099U (en) * 2018-06-22 2019-02-19 福建省有竹科技有限公司 A kind of bamboo-wood plyboard
CN209396351U (en) * 2019-01-21 2019-09-17 福建省和普新材料有限公司 A kind of container bottom board that bamboo and wood is compound
CN209648949U (en) * 2019-01-18 2019-11-19 福建省和普新材料有限公司 A kind of lorry composite bottom board
CN209650996U (en) * 2019-03-08 2019-11-19 福建省和普新材料有限公司 A kind of container bottom board
CN211967811U (en) * 2019-12-31 2020-11-20 徐州祥福润木业有限公司 Composite durable container bottom plate
CN212100300U (en) * 2019-12-31 2020-12-08 徐州祥福润木业有限公司 Novel container bottom plate that compressive property is good

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1757847A (en) * 2002-04-30 2006-04-12 邱则有 Foundation plate structural member for formwork of reinforced concrete
AU2003252980A1 (en) * 2002-08-06 2004-02-23 Cavity Protection Systems Limited Oven liner
CN104802233A (en) * 2014-01-27 2015-07-29 上海杰事杰新材料(集团)股份有限公司 Container baseboard and preparation method thereof
CN104802231A (en) * 2014-01-27 2015-07-29 上海杰事杰新材料(集团)股份有限公司 Reinforced container soleplate and preparation method thereof
CN208515099U (en) * 2018-06-22 2019-02-19 福建省有竹科技有限公司 A kind of bamboo-wood plyboard
CN209648949U (en) * 2019-01-18 2019-11-19 福建省和普新材料有限公司 A kind of lorry composite bottom board
CN209396351U (en) * 2019-01-21 2019-09-17 福建省和普新材料有限公司 A kind of container bottom board that bamboo and wood is compound
CN209650996U (en) * 2019-03-08 2019-11-19 福建省和普新材料有限公司 A kind of container bottom board
CN211967811U (en) * 2019-12-31 2020-11-20 徐州祥福润木业有限公司 Composite durable container bottom plate
CN212100300U (en) * 2019-12-31 2020-12-08 徐州祥福润木业有限公司 Novel container bottom plate that compressive property is good

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